Major Players Race to Launch High-Capacity Energy Storage Systems Exceeding 500kWh

With the goal of optimizing energy distribution and reducing electricity costs, the industrial and commercial energy storage sector is experiencing rapid growth. From 2024 to 2025, numerous energy storage companies, including Jinko Energy, Yongtai Energy, Penghui Energy, Weiheng Smart, Kelu Electronics, Ronghe Yuanshu, Sunshine Power, and CATL, are set to launch new large-capacity energy storage systems exceeding 500kWh. These new products not only showcase technological advancements but also demonstrate strong competitiveness in terms of cost control, safety performance, and intelligent management, thereby providing innovative energy solutions for industrial and commercial users.

Currently, the capacities of industrial and commercial energy storage products from various manufacturers are not standardized and vary in advantages. According to a review by EnergyTrend, several characteristics are evident in the commercial energy storage products from various companies:

• Transitioning to a “Large Capacity Era”: To enhance cost-effectiveness, products with capacities exceeding 500kWh are rapidly emerging. From a system perspective, large-capacity energy storage systems can reduce land usage, lower installation, operation, and maintenance costs, as well as decrease the number of required devices, thus enhancing economies of scale.
• Widespread Use of Large-Capacity Cells: These cells can reduce the number of integrated components, thereby lowering costs while maintaining long cycle life and reducing the levelized cost of electricity over the product’s lifecycle.
• Modular Design: This allows the energy storage system to incrementally increase the number of modules based on actual needs, facilitating efficient deployment and flexible expansion. For example, Jinko Energy’s Dolphin 520kWh energy storage system supports 1 to 12 units for off-grid and grid-connected configurations, allowing for flexible system capacity expansion as user demand grows.
• Upgraded Safety Features: Safety enhancements are implemented across multiple dimensions, including battery cells, thermal management, and fire safety, to mitigate risks of thermal runaway. Advanced technologies such as AI facilitate real-time monitoring, intelligent maintenance, and fault warnings for the energy storage systems.
• Full-Scenario Adaptability: Customized designs for different applications, such as factories and industrial parks, cater to a variety of operational contexts.

Jinko Energy: A Model of Modular Integration with the Dolphin 520kWh System on May 20, Jinko Energy officially launched the Dolphin 520kWh commercial energy storage system, which integrates large capacity, high flexibility, strong adaptability, and robust safety. It employs high-performance 314Ah battery cells, precisely configuring the direct current side capacity at 520kWh, while the alternating current side supports 125kW (4-hour system) and 250kW (2-hour system) three-phase four-wire output. This system meets diverse needs such as continuous production, peak-valley arbitrage, auxiliary frequency modulation, and microgrid backup power, providing ample electricity reserves for commercial users. The system features a highly integrated, standardized modular design that enables efficient deployment and flexible capacity expansion, leading to over a 10% cost reduction and a 40% increase in installation efficiency, thereby shortening project construction cycles for immediate use.

The Dolphin 520kWh system has received international certification from GB, IEC, and UL, ensuring safety through a three-tier protection and five-dimensional safety design. It is equipped with intelligent temperature control and a multi-tier intelligent monitoring system for continuous 24-hour monitoring of operational status, guaranteeing electrical safety and stability.

Yongtai Energy: Intelligent Liquid Cooling for Cost and Performance Efficiency On the same day, Yongtai Energy unveiled the 522L intelligent liquid-cooled commercial storage system. This system features a self-developed liquid cooling 2.0 Pack that effectively controls temperature differences in battery cells to within 2.5°C, ensuring battery performance and longevity while operating reliably in temperatures ranging from -20°C to 55°C. Moreover, it employs cloud-edge collaborative AI for predictive alerts, enhancing safety and extending product lifespans by over 20%, with a 15% decrease in levelized cost of electricity. It supports both charge and discharge operations, catering to diverse energy storage scenarios and synergizing solar and storage solutions.

Penghui Energy: Innovative Architecture Doubles Production and Delivery Efficiency On February 14, 2025, Penghui Energy launched the “Qingtian 520” energy storage cabinet. This product has a capacity of 520kWh, achieves a 4% efficiency enhancement, and reduces footprint by 54%, doubling production and delivery efficiency through architectural innovations in design and manufacturing. The energy storage cabinet’s efficiency improvements stem from structural and intelligent temperature control innovations, which are expected to increase annual operational returns for end customers by approximately 8%. It fully adopts a new industrial design with front-opening maintenance, maintaining the same capacity while reducing space by 54% and increasing energy density by 32.5%. It can adapt to various industrial and commercial storage scenarios, meeting diverse customer needs.

Weiheng Smart: AI Empowerment for Flexible Expansion in Commercial Storage In May 2025, Weiheng Smart launched the PowerCore series, featuring a 62.5-250kW/500kWh commercial energy storage system at Intersolar Europe 2025. This system utilizes CATL’s 306Ah original battery modules, achieving a capacity of 500kWh with a modular AC/DC design that meets flexible expansion needs from small commercial setups to large parks. It offers tailored solutions for peak shaving and self-consumption, and has been certified by VDE 4110 for seamless integration with the EU power grid. Its AI central system, PANGU OS, dynamically optimizes charge and discharge strategies based on real-time electricity price data, truly ensuring that every kilowatt-hour generates value.

Kelu Electronics: Aqua E Series with Smart Operations Management On April 10, 2025, Kelu Electronics introduced the Aqua E series at the ESIE 2025 energy storage exhibition. This new product features an “All-in-One” design, reducing footprint by 30%, with a comprehensive efficiency of ≥90% and a power output of 250kW at a single capacity of 522kWh. Compared to traditional outdoor cabinets with capacities typically between 200-300kWh, this product achieves a twofold increase. The core advantages of the Aqua E series lie in extreme safety, performance, stability, and intelligent operations management, significantly shortening installation periods by 50%. It is designed for various operational strategies such as peak shaving, demand control, solar-storage integration, and virtual power plants, optimizing scheduling revenue and reducing investment payback periods. Notably, pricing discounts are available for bulk orders placed between April 10 and April 30, enhancing cost-efficiency for customers.

Ronghe Yuanshu: Tianlu 3.0 Max with Upgraded Intelligent Control for Increased Profitability On November 28, 2024, Ronghe Yuanshu launched the latest generation of commercial storage products, the Ronghe Tianlu 3.0 Max, with a single machine capacity of 250kW/500kWh, adaptable for 2-hour or 4-hour project requirements. The product uses a specialized pack for commercial storage and self-developed core components, enhancing compatibility and product performance. The operational platform, Tianlu Intelligent Control, can adjust strategies based on load forecasting algorithms, potentially increasing customer profits by approximately 20%. Additionally, through AI algorithms, it can learn from historical load data to assist users in decision-making for demand response strategies, providing an additional 20% profit increase. The system is equipped with three levels of safety features, meeting the highest fire safety standards.

Sunshine Power: PowerStack 800CS with Golden Capacity Architecture On September 25, 2024, Sunshine Power launched its first liquid cooling energy storage system for large industrial applications, the PowerStack 800CS, focusing on the heightened needs for cost-effectiveness, convenience, and safety among large industrial users. This system utilizes an 836kWh “golden capacity” design, compatible with varying voltage levels and MVS cabinets to meet storage requirements in large industrial scenarios. It features functionalities such as one-click electricity pricing/power strategies, rapid site data updates, and cloud-based billing, allowing users to manage their energy stations remotely. Currently, this product has been mass produced and introduced to the market, although Sunshine Power has not disclosed specific order numbers. However, it has secured a notable market share and application projects in the relevant sectors.

CATL: The TENER Flex Energy Storage Cabinet with Compact Flexibility In September 2024, CATL introduced the TENER Flex series at the UK Energy Storage Exhibition, featuring a capacity of 376kW/752kWh. As a new addition to the TENER series, the TENER Flex energy storage cabinet has garnered attention for its outstanding flexibility, safety, and performance. It is designed for large-scale commercial users, with a compact design that saves installation space while maintaining the safety, lifespan, and energy density of the original TENER products. It can be configured in a back-to-back skid style, facilitating transportation and deployment. This product is ingeniously designed to be compatible with both string inverters and centralized inverters, capable of adapting to a voltage range of 600V to 1500V for integrated PCS, meeting diverse needs for large-scale industrial and distributed generation applications. Noise levels are controlled at 65 decibels, optimized to meet UK standards BS4142 and NOISE 2000/14/EC, making it suitable for sensitive environments such as hospitals and schools. Currently, it has secured some orders in the UK and European markets for local commercial storage projects.

In summary, the new 500kWh commercial storage products are reshaping the industry landscape with their innovative approaches. These products combine large capacity with high integration characteristics, enabling flexible deployment and efficient expansion through modular designs. The deep application of advanced technologies such as intelligent liquid cooling and AI management significantly enhances system safety and economic viability over their lifecycle. From customized solutions adaptable to multiple scenarios to architectural innovations that break traditional molds, each new product exemplifies a forward-looking exploration of future energy trends. The application of these high-quality new products is expected to significantly promote green and low-carbon development, injecting continuous innovation into the energy sector.